{"id":168,"date":"2025-07-18T15:16:13","date_gmt":"2025-07-18T06:16:13","guid":{"rendered":"https:\/\/sgt.tailc1292c.ts.net\/wordpress\/?p=168"},"modified":"2026-05-31T23:27:39","modified_gmt":"2026-05-31T14:27:39","slug":"kerberos","status":"publish","type":"post","link":"https:\/\/sgt.tailc1292c.ts.net\/wordpress\/2025\/07\/18\/kerberos\/","title":{"rendered":"Kerberos\u5c0e\u5165\u304b\u3089SSH GSSAPI\u8a8d\u8a3c\u6210\u529f\u307e\u3067\u306e\u8a18\u9332"},"content":{"rendered":"<br \/>\n<h2>\ud83d\udee0\ufe0f \u76ee\u7684<\/h2>\n<p>Kerberos\u3092\u4f7f\u3063\u3066\u3001SSH\u30ed\u30b0\u30a4\u30f3\u3092\u516c\u958b\u9375\u306a\u3057\u3067GSSAPI\u8a8d\u8a3c\uff08SSO\u98a8\uff09\u3067\u901a\u3059\u69cb\u6210\u3092\u76ee\u6307\u3057\u305f\u3002sudo\u3082\u30c1\u30b1\u30c3\u30c8\u3067\u901a\u3059\u69cb\u60f3\u3060\u3063\u305f\u304c\u3001\u305d\u3053\u306b\u306f\u5225\u9014PAM\u9023\u643a\u304c\u5fc5\u8981\u3067\u4eca\u56de\u306f\u898b\u9001\u308a\u3002<\/p>\n<h2>\ud83d\udccc \u74b0\u5883\u69cb\u6210<\/h2>\n<ul>\n<li>KDC\u30b5\u30fc\u30d0\uff1a<code>kdc.starf.local<\/code><\/li>\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff08SSH\u767a\u884c\u5143\uff09\uff1a<code>sgt.starf.local<\/code><\/li>\n<li>SSH\u30b5\u30fc\u30d0\uff08\u30ed\u30b0\u30a4\u30f3\u5148\uff09\uff1a<code>starf.starf.local<\/code><\/li>\n<li>\u30c9\u30e1\u30a4\u30f3\uff1a<code>STARF.LOCAL<\/code><\/li>\n<li>\u30e6\u30fc\u30b6\u30fc\uff1a<code>user<\/code><\/li>\n<\/ul>\n<h2>1\ufe0f\u20e3 Kerberos\u306e\u57fa\u672c\u8a2d\u5b9a<\/h2>\n<h3>\u30b5\u30fc\u30d0\u5074\uff08KDC\uff09<\/h3>\n<pre><code>\/etc\/krb5.conf \u306e\u8a2d\u5b9a\r\n[kdc]\r\n    profile = \/etc\/krb5kdc\/kdc.conf<\/code><\/pre>\n<p>kadmin\u3067\u30d7\u30ea\u30f3\u30b7\u30d1\u30eb\u8ffd\u52a0\uff1a<\/p>\n<pre><code>addprinc host\/starf.STARF.LOCAL\r\naddprinc -randkey host\/starf.STARF.LOCAL\r\nktadd host\/starf.STARF.LOCAL<\/code><\/pre>\n<h3>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\uff08sgt\uff09<\/h3>\n<p>\u30c1\u30b1\u30c3\u30c8\u53d6\u5f97\u78ba\u8a8d\uff1a<\/p>\n<pre><code>kinit user\r\nklist<\/code><\/pre>\n<h2>2\ufe0f\u20e3 SSH\u5074\u306e\u8a2d\u5b9a<\/h2>\n<h3>sshd_config\uff08starf\u5074\uff09<\/h3>\n<pre><code>GSSAPIAuthentication yes\r\nGSSAPICleanupCredentials yes\r\nUsePAM yes<\/code><\/pre>\n<h3>ssh_config\uff08\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\uff09<\/h3>\n<pre><code>GSSAPIAuthentication yes\r\nGSSAPIDelegateCredentials yes<\/code><\/pre>\n<h2>3\ufe0f\u20e3 host\u30d7\u30ea\u30f3\u30b7\u30d1\u30eb\u3068keytab\u306e\u8ff7\u8d70<\/h2>\n<p>keytab\u3092 <code>\/etc\/krb5.keytab<\/code> \u306b\u66f8\u304d\u8fbc\u3080\u3082\u3001\u30d7\u30ea\u30f3\u30b7\u30d1\u30eb\u306e\u7db4\u308a\uff08starF vs starf\uff09\u3001\u30db\u30b9\u30c8\u540d\uff08FQDN\uff09\u3001KVNO\u306e\u4e0d\u6574\u5408\u306a\u3069\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30ab\u30aa\u30b9\u72b6\u614b\u306b\u3002<\/p>\n<pre><code>klist -k \/etc\/krb5.keytab\r\n 2 host\/starf.STARF.LOCAL@STARF.LOCAL\r\n 2 host\/starF.STARF.LOCAL@STARF.LOCAL\r\n 2 host\/starf.starf.local@STARF.LOCAL\r\n 1 host\/starf.STARF.LOCAL@STARF.LOCAL<\/code><\/pre>\n<h3>\u5bfe\u5fdc\u7b56<\/h3>\n<ul>\n<li>hostname -f \u304c <code>starF.starF.local<\/code> \u3068\u306a\u3063\u3066\u304a\u308a\u3001Kerberos\u306b\u767b\u9332\u3055\u308c\u305f\u30d7\u30ea\u30f3\u30b7\u30d1\u30eb\u3068\u4e00\u81f4\u3057\u306a\u3044<\/li>\n<li>FQDN\uff08\u5c0f\u6587\u5b57\/\u5927\u6587\u5b57\uff09\u3068krb5.keytab\u4e2d\u306e\u30d7\u30ea\u30f3\u30b7\u30d1\u30eb\u304c\u4e0d\u4e00\u81f4 \u2192 <strong>\u3059\u3079\u3066\u7d71\u4e00<\/strong>\u3057\u305f<\/li>\n<li>\u6b63\u3057\u3044KVNO\u3060\u3051\u3092\u6b8b\u3059\u305f\u3081\u3001<code>ktutil<\/code>\u3067keytab\u3092\u624b\u52d5\u7de8\u96c6<\/li>\n<\/ul>\n<h2>4\ufe0f\u20e3 \u8a8d\u8a3c\u30a8\u30e9\u30fc\u3068\u305d\u306e\u539f\u56e0<\/h2>\n<p>\u30ed\u30b0\u306e\u629c\u7c8b\uff1a<\/p>\n<pre><code>Unspecified GSS failure.  Minor code may provide more information\r\nKey version is not available<\/code><\/pre>\n<p>\u2192 \u539f\u56e0\u306f keytab \u306b\u3042\u308b\u30d7\u30ea\u30f3\u30b7\u30d1\u30eb\u306e KVNO \u304c\u30c1\u30b1\u30c3\u30c8\u3068\u4e00\u81f4\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u3002<\/p>\n<p>\u518d\u5ea6 <code>ktutil<\/code> \u306b\u3066\u6b63\u3057\u3044\u30d7\u30ea\u30f3\u30b7\u30d1\u30eb\u3060\u3051\u3092 <code>addent<\/code> \u2192 <code>wkt<\/code> \u3067\u4fdd\u5b58\u3057\u3001\u30c1\u30b1\u30c3\u30c8\u53d6\u5f97\u3068\u7167\u5408\u3002<\/p>\n<h2>5\ufe0f\u20e3 \u6210\u529f\u306e\u77ac\u9593<\/h2>\n<p>\u3064\u3044\u306b\u4ee5\u4e0b\u306e\u51fa\u529b\u304c\u5f97\u3089\u308c\u305f\uff1a<\/p>\n<pre><code>debug1: Next authentication method: gssapi-with-mic\r\nAuthenticated to starf ([192.168.11.8]:22) using \"gssapi-with-mic\"<\/code><\/pre>\n<p><code>klist<\/code> \u7d50\u679c\uff08GSS\u8a8d\u8a3c\u5f8c\uff09<\/p>\n<pre><code>Ticket cache: FILE:\/tmp\/krb5cc_1000\r\nDefault principal: user@STARF.LOCAL\r\n\r\nValid starting       Expires              Service principal\r\n2025-07-19T00:30:39  2025-07-19T15:31:39  krbtgt\/STARF.LOCAL@STARF.LOCAL\r\n2025-07-19T00:32:01  2025-07-19T15:31:39  host\/starf.starf.local@STARF.LOCAL<\/code><\/pre>\n<h2>\u2705 \u307e\u3068\u3081<\/h2>\n<ul>\n<li>\u30d7\u30ea\u30f3\u30b7\u30d1\u30eb\u540d\u306f FQDN\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u542b\u3081\u3066\u6b63\u78ba\u306b<\/li>\n<li>hostname -f \u3068 krb5.keytab \u306e\u30d7\u30ea\u30f3\u30b7\u30d1\u30eb\u540d\u306f\u4e00\u81f4\u5fc5\u9808<\/li>\n<li>KVNO \u306f <code>ktutil list<\/code>\u3068<code>klist<\/code>\u3092\u4f7f\u3063\u3066\u6574\u5408\u6027\u3092\u53d6\u308b<\/li>\n<li>GSS\u8a8d\u8a3c\u6642\u306e\u30a8\u30e9\u30fc\u306f\u3001keytab\u306eKVNO\u4e0d\u6574\u5408\u304c\u591a\u3044<\/li>\n<li><code>sudo<\/code>\u306e\u30c1\u30b1\u30c3\u30c8\u9023\u643a\u306f <code>pam_krb5<\/code>\u304c\u5fc5\u8981\uff08\u4eca\u56de\u306f\u672a\u5c0e\u5165\uff09<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u3067\u3001Kerberos + SSH(GSSAPI)\u74b0\u5883\u306f\u5b8c\u6210\u3002SSO\u98a8\u30ed\u30b0\u30a4\u30f3\u304c\u53ef\u80fd\u306b\u306a\u3063\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>2\u53f0\u306e\u30b5\u30fc\u30d0\u306e\u30ed\u30b0\u30a4\u30f3\u304c\u9762\u5012\u3067\uff0cKerberos\u306e\u5c0e\u5165\u3092\u884c\u3044\u307e\u3057\u305f\uff0e<br \/>\n\u7c98\u308a\u5f37\u304f\u5b9f\u88c5\u3092\u9032\u3081\u308b\u529b\u304c\u4ed8\u304d\u307e\u3057\u305f(?)<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"common","vkexunit_cta_each_option":"","_lightning_design_setting":{"layout":"default"},"footnotes":""},"categories":[6],"tags":[],"class_list":["post-168","post","type-post","status-publish","format-standard","hentry","category-6"],"veu_head_title_object":{"title":"","add_site_title":""},"_links":{"self":[{"href":"https:\/\/sgt.tailc1292c.ts.net\/wordpress\/wp-json\/wp\/v2\/posts\/168","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sgt.tailc1292c.ts.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sgt.tailc1292c.ts.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sgt.tailc1292c.ts.net\/wordpress\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sgt.tailc1292c.ts.net\/wordpress\/wp-json\/wp\/v2\/comments?post=168"}],"version-history":[{"count":5,"href":"https:\/\/sgt.tailc1292c.ts.net\/wordpress\/wp-json\/wp\/v2\/posts\/168\/revisions"}],"predecessor-version":[{"id":171,"href":"https:\/\/sgt.tailc1292c.ts.net\/wordpress\/wp-json\/wp\/v2\/posts\/168\/revisions\/171"}],"wp:attachment":[{"href":"https:\/\/sgt.tailc1292c.ts.net\/wordpress\/wp-json\/wp\/v2\/media?parent=168"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sgt.tailc1292c.ts.net\/wordpress\/wp-json\/wp\/v2\/categories?post=168"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sgt.tailc1292c.ts.net\/wordpress\/wp-json\/wp\/v2\/tags?post=168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}